Abstract

We evaluate the contribution of cosmic microwave background (CMB) polarization spectra to cosmological
parameter constraints. We produce cosmological parameters using high-quality CMB polarization data from
the ground-based QUaD experiment and demonstrate for the majority of parameters that there is significant
improvement on the constraints obtained from satellite CMB polarization data. We split a multi-experiment
CMB data set into temperature and polarization subsets and show that the best-fit confidence regions for the
_CDMsix-parameter cosmologicalmodel are consistent with each other, and that polarization data reduces the
confidence regions on all parameters. We provide the best limits on parameters from QUaD EE/BB polarization
data and we find best-fit parameters from the multi-experiment CMB data set using the optimal pivot scale of
kp = 0.013 Mpc-1 to be {h2Ωc, h2Ωb, H0, As, ns,Г}={0.113, 0.0224, 70.6, 2.29×10-9, 0.960, 0.086}.

Item Type:

Article

Additional Information:

Preprint version of the original published article, which is available at doi:10.1088/0004-637X/716/2/1040.